My Vizio developed a problem, it stoped moving apps to the SD card, it said app failed to move not enough storage. My SD card had 22.03GB of storage app storage had 516MB, but my internal storage said 0.00b. Powered off for a few minutes...no change Unmounted power off remove card, reinstall card re power remount... no change. Call vizio tried the above with them.. no change They suggested erase internal, some how my tab was not recognizing it, I had used about 700 mb of the 2.4GB, but that fixed my problem. The viz is humming along quite nicely now. CS spent over 40 minutes with me and my rep asked some others if they had this problem before none had, guess I was the first, woot woot.